Foundation Models · since 2024

State-Space Hybrid

State-space (Mamba) architectures combined with attention — challenging pure transformers on long-context efficiency. NOT anticipated: the hybrid shipped in 2024 (Jamba, Zamba, Falcon Mamba). The likely shape of the successor backbone is a hybrid (attention + SSM + MoE), not a clean replacement; pure attention is being eroded, not deposed.

4

events traced

4

source records

30 Jun 2026

first signal

9 Jul 2026

last activity

Who drove it

AI21 (Jamba)30%
Zyphra / TII26%
academia + labs24%
frontier labs20%

Key movements

2024

first production hybrid (Jamba)

256K

context on one 80GB GPU

shipping

linear-time long context

The story, event by event

Every point below is traced to a real source — nothing on this page is invented.

  1. 1 Dec 2023impact 72

    Mamba — selective state-space models

    value: linear-time; metric: scaling

  2. 28 Mar 2024impact 78

    Jamba — first production Mamba+attention+MoE hybrid

    value: 256K; metric: context

  3. 12 Aug 2024impact 64

    Zamba & Falcon Mamba follow

    value: shipping; metric: class

  4. 22 Jan 2026impact 60

    Introduction of D4RT Model for 4D Scene Reconstruction

    efficiency: 300x compared to previous methods; architecture: Unified encoder-decoder Transformer

Lineage

Descended from

This is one node. The map holds the whole field.

Watch State-Space Hybrid — and everything it connects to — grow as real news threads onto the map every day.